of stones. >> reporter: this is home to the u.s. national meteorite collection. some of these rocks are more than 4 billion years old. >> we're looking at a snapshot of the very beginnings of our solar system when we look at this type of rock. >> reporter: dr. bullock said the russian meteor likely came from the astroid belt between mars and jupiter. >> once in a while we get lucky. we get a piece of rock from the mars or the moon, but in this instance we think it's most likely it came from the astroid belt. >> reporter: not the astroid that just passed close to our world. that was predicted. the russian meteor came out of the blue. >> this came out of egypt. >> reporter: believe to have struck and killed a dog when it fell to earth in 1911. this meteor created a crater in arizona, one of the largest impacts on the planet and this wharton meteorite crashed through a doctor's office in virginia in january of 2010. >> this was the ceiling tile above the exam room where the meteor landed. >> reporter: today's event might have been rough for the russian people but vital for science.